November 28, 2024, 11:58:02 AM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: CaO solublity in H2O  (Read 2295 times)

0 Members and 1 Guest are viewing this topic.

Offline curiouscat

  • Chemist
  • Sr. Member
  • *
  • Posts: 3006
  • Mole Snacks: +121/-35
CaO solublity in H2O
« on: January 06, 2013, 02:15:58 AM »
I expect CaO when mixed with H2O reacts like so:

CaO (s) + H2O (l)  ::equil::  Ca(OH)2 (aq)

Why then does Wikipedia mention a solubility in H2O as: 1.19 g/L (25 °C)? When a solid reacts with H2O what does "solubility" mean?

From stoichiometry alone a Litre of H2O ~ 50 mol ~ 2.5 kg of CaO. What am I getting wrong?


Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27863
  • Mole Snacks: +1813/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: CaO solublity in H2O
« Reply #1 on: January 06, 2013, 04:24:53 AM »
Ca(OH)2 itself is weakly soluble, so I suppose what they mean is that after you add more than 1.19 g per L it will still react with water, but the product will be not dissolved.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline curiouscat

  • Chemist
  • Sr. Member
  • *
  • Posts: 3006
  • Mole Snacks: +121/-35
Re: CaO solublity in H2O
« Reply #2 on: January 06, 2013, 08:23:45 AM »
Quote from: Borek on January 06, 2013, 04:24:53 AM
Ca(OH)2 itself is weakly soluble, so I suppose what they mean is that after you add more than 1.19 g per L it will still react with water, but the product will be not dissolved.

Thanks! 
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links